WO2004103684A1 - Calibrating device - Google Patents

Calibrating device Download PDF

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Publication number
WO2004103684A1
WO2004103684A1 PCT/EP2004/005024 EP2004005024W WO2004103684A1 WO 2004103684 A1 WO2004103684 A1 WO 2004103684A1 EP 2004005024 W EP2004005024 W EP 2004005024W WO 2004103684 A1 WO2004103684 A1 WO 2004103684A1
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WO
WIPO (PCT)
Prior art keywords
segment
calibration
segment body
segments
individual
Prior art date
Application number
PCT/EP2004/005024
Other languages
German (de)
French (fr)
Inventor
Henning Stieglitz
Aron Altmann
Original Assignee
Krauss-Maffei Kunststofftechnik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krauss-Maffei Kunststofftechnik Gmbh filed Critical Krauss-Maffei Kunststofftechnik Gmbh
Priority to EP04732114.6A priority Critical patent/EP1631436B1/en
Priority to CA2526703A priority patent/CA2526703C/en
Publication of WO2004103684A1 publication Critical patent/WO2004103684A1/en
Priority to US11/284,303 priority patent/US7357630B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting

Definitions

  • the invention relates to a calibration device according to the preamble of claim 1 or claim 2.
  • Calibration devices are used, for example, for the calibration of extruded endless profiles, in particular pipes.
  • a plastic melt is processed in an extruder, which is then machined by an outlet nozzle.
  • the calibration device passes through the calibration device, in which it is shaped with exact dimensions.
  • This calibration device consists, for example, of a multiplicity of lamellae which are distributed on the outside of the tube to be calibrated over the circumference and are arranged at a distance from one another. Seen in the direction of production of the tube, a large number of such lamellar rings are arranged within a calibration station, the individual lamellas of the individual lamellar rings being spaced from one another so that the individual lamellas of the individual ring can be easily adjusted relative to the lamellas of the subsequent ring or the previous ring is.
  • the lamellae of the known calibration device are combined in segments to form a lamella block and are carried by a holding structure.
  • the holding structure is in turn connected to the housing in a radially adjustable manner.
  • the problem with this embodiment of the known calibration device is the threading of the individual segments on rods, whereby ground sleeves have to be inserted between the segments. These sleeves ensure a constant distance between the segments.
  • the design requires a lengthy and therefore costly assembly.
  • unavoidable manufacturing tolerances add up, which can lead to the position of the segment carriers deviating unacceptably.
  • the segment blocks cannot be installed in the calibration basket, which in turn requires reworking.
  • the object of the present invention is to provide a calibration device which is simple in construction and easy to assemble and in which excessive manufacturing tolerances can be avoided.
  • a basic idea of the present invention is to produce the segment bodies from one workpiece each.
  • the segment bodies can then be formed with a contour for the calibration opening that is finished on the inside.
  • the segment body can thus be milled from one piece.
  • the blank can be made of metal, for example, and cast in a mold.
  • the use of other materials, such as plastic, is also possible for the segment body.
  • the later internal contour for the calibration opening can in turn be formed directly in the workpiece itself. It is thus possible to coat the correspondingly machined inner surface in a suitable manner, so that the surface is as friction-free and wear-resistant as possible. It is also possible to create a type of lamella structure or another structure by milling grooves in the workpiece. Alternatively, it is possible to attach separate contour elements to the workpiece. For example, metal elements, in particular crescent-shaped slats, can be used in a plastic body.
  • a complete arrangement of a device for producing a plastic tube can be found in DE 198 43 340 C2.
  • An already adjustable calibration device is shown in this.
  • the adjustable calibration device is a core component of a pipe extrusion system with the possibility of changing dimensions. It takes on the shaping task of a standard calibration, but can be adjusted continuously over the design-related diameter range.
  • Fig. 1 Segments 18 have a curve along their inside, that is, the circumferential direction of the pipe, which corresponds to the largest possible pipe outer diameter and are combined to form individual segment sections.
  • These segment sections comprise individual lamellae which, viewed in the direction of production, are spaced apart but lie closely behind one another.
  • Two consecutive segment wreaths are combined to form a dimension wreath, which are staggered to each other. This ensures that there are as few edges as possible when the pipe passes through the calibration device.
  • the individual segment surfaces together form an essentially smooth inner tube surface with an almost circular geometry.
  • the segments 18 lying axially one behind the other in the production direction of the tube are combined to form a segment block.
  • a support structure 30 is used for this.
  • the support structure consists essentially of two rods on which the individual segments 18 are lined up.
  • the support structure 30 is connected to a holding and actuating device 20, which connects the respective segment blocks to the housing of the calibration device in a radially adjustable manner.
  • the housing of the calibration device consists of two cylinder sections 12 and 14 arranged coaxially one inside the other.
  • the individual segment blocks 16 are accommodated in a circular manner in these cylinder sections.
  • a single - known - segment block of the previously known embodiment is shown schematically in FIG. 3.
  • the support rods form the support structure 30.
  • two external thread rods 40 which serve as spindle supports, are spaced apart in the axial direction.
  • the external threaded rods 40 are received in the associated bores of the housing cylinders 12 and 14.
  • a gear nut 22 is provided for each external threaded rod, which cooperates with the external thread of the external threaded rod 40 in an adjustable manner.
  • 12 segment blocks are arranged in a circle in the present case.
  • Each segment block has two spindle carriers 20, which are axially spaced apart (FIG. 2) and each interact with an associated gear nut 22.
  • the gear nuts 22 are in turn adjusted together by a gear ring 26 which extends circumferentially between the axially spaced gear nuts 22.
  • the gear ring 26 has teeth meshing with the gear nuts 22 on its two edges.
  • all segment blocks can be adjusted radially outwards or inwards simultaneously and in the same way. If all segment blocks are adjusted radially in the same way, the calibration diameter changes.
  • the outer diameter of the tube 24 to be calibrated can thus be defined in the area of the adjustment possibility.
  • the segments according to the invention do not comprise - as in the prior art - a large number of individual lamellae, but are made from a workpiece which in each case forms a segment body 50.
  • a contour is formed on the inside of the segment body (not shown in detail), which is required to form the calibration opening. It can be a smooth, possibly coated surface, which represents a curved pipe segment section. Toothings can be arranged on their sides, which ensure the overlap of the individual segments arranged adjacent to one another.
  • structures can also be incorporated into the inner surface of the segment body. It is thus possible to introduce parallel spaced grooves, so that lamella-like projections are again formed on the inside, but in one piece with the segment body.
  • the workpiece can be cast from metal and subsequently machined. In particular, surfaces can be formed by milling.
  • Another possibility of forming the segment body is shown schematically in FIG. 5.
  • the segment body 50 itself consists of plastic, in which crescent-shaped metal lamellae are inserted on the later inside. This design has the advantage that the plastic segment body 50 can be produced relatively inexpensively and simply; the metal fins are nevertheless resistant and precise to manufacture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Milling Processes (AREA)

Abstract

The invention relates to a device for calibrating extruded endless profiled elements, especially pipes, comprising a calibrating aperture (11) that is formed by a plurality of circumferentially disposed segments (18), the interior surface of which jointly forms the calibrating aperture (11). Each of the individual segments (18) encompasses a segment body (50). Said segment bodies (50) are accommodated in a substantially circular manner inside a housing (12, 14) such that axially adjacent segment zones (18) partially overlap in the circumferential direction so as to embody the calibrating aperture (11). Each segment body (50) is connected to at least one actuating device (20) by means of which the individual segment bodies (50) are retained in the housing (12, 14) and can be displaced in a radial direction. In order to be able to produce the segments in a simpler manner, each segment body (50) is made from a single workpiece while the finished contour for the calibrating aperture (11) is configured on the inside of the segment body (50) or inserts for configuring the contour are accommodated thereupon or therein.

Description

Kalibriereinrichtung calibration
Beschreibungdescription
Die Erfindung betrifft eine Kalibriereinrichtung gemäß dem Oberbegriff des Anspruchs 1 oder des Anspruchs 2.The invention relates to a calibration device according to the preamble of claim 1 or claim 2.
Kalibriereinrichtungen werden beispielsweise zur Kalibrierung von extrudierten Endlosprofilen, insbesondere Rohren, verwendet. Dabei wird in einem Extruder zunächst eine Kunststoffschmelze aufbereitet, welche durch eine Austrittsdüse formgebend bearbeitetet wird. Zur Sicherstellung der gewünschten Dimensionierung des Endlosprofils, durchläuft dieses nach der Formgebung die Kalibriereinrichtung, in der es dimensionsgenau geformt wird.Calibration devices are used, for example, for the calibration of extruded endless profiles, in particular pipes. First, a plastic melt is processed in an extruder, which is then machined by an outlet nozzle. To ensure the desired dimensioning of the endless profile, after it has been shaped, it passes through the calibration device, in which it is shaped with exact dimensions.
Bei der Herstellung von Kunststoffrohren war es bis vor einiger Zeit notwendig, für unterschiedliche Wanddicken oder Außendurchmesser, verschiedene Kalibriereinrichtungen zur Verfügung zu stellen. Dazu mussten die entsprechenden Teile ausgewechselt werden, was ein Stillsetzen der Maschine erforderte und damit zu Ausfallzeiten führte.Until recently, when manufacturing plastic pipes, it was necessary to provide different calibration devices for different wall thicknesses or outside diameters. To do this, the corresponding parts had to be replaced, which required the machine to be shut down and thus lead to downtimes.
In der DE 198 43 340 C2 ist daher vorgeschlagen, eine einstellbare Kalibriereinrichtung für unterschiedliche Rohrdimensionen zu verwenden. Diese Kalibriereinrichtung besteht beispielsweise aus einer Vielzahl von Lamellen, die an der Außenseiten des zu kalibrierenden Rohrs über den Umfang verteilt und im Abstand zueinander angeordnet sind. In Produktionsrichtung des Rohres gesehen, sind eine Vielzahl solcher Lamellenkränze innerhalb einer Kalibrierstation angeordnet, wobei die einzelnen Lamellen der einzelnen Lamellenkränze auf Lücke zueinander stehen, so dass eine problemlose Verstellung der einzelnen Lamellen des einzelne Kranzes gegenüber den Lamellen des nachfolgenden Kranzes oder des vorhergehenden Kranzes möglich ist. Die Lamellen der bekannten Kalibriereinrichtung sind segmentweise zu einem Lamellenblock zusammengefasst und von einer Haltekonstruktion getragen. Die Haltekonstruktion wiederum ist mit dem Gehäuse in radial verstellbarer Weise verbunden. Problematisch bei dieser Ausführungsform der bekannten Kalibriereinrichtung ist jedoch die Auffädelung der einzelnen Segmente auf Stangen, wobei zwischen den Segmenten geschliffene Hülsen einzusetzen sind. Diese Hülsen gewährleisten einen gleichbleibenden Abstand zwischen den Segmenten. Die Konstruktion erfordert jedoch eine langwierige und damit kosten intensive Montage. Darüber hinaus summieren sich unvermeidbare Fertigungstoleranzen auf, was dazu führen kann, dass die Position der Segmentträger unzulässig stark abweichen. Im Extremfall lassen sich die Segmentblöcke dann nicht in den Kalibrierkorb montieren, was wiederum eine Nachbesserung erfordert.DE 198 43 340 C2 therefore proposes to use an adjustable calibration device for different pipe dimensions. This calibration device consists, for example, of a multiplicity of lamellae which are distributed on the outside of the tube to be calibrated over the circumference and are arranged at a distance from one another. Seen in the direction of production of the tube, a large number of such lamellar rings are arranged within a calibration station, the individual lamellas of the individual lamellar rings being spaced from one another so that the individual lamellas of the individual ring can be easily adjusted relative to the lamellas of the subsequent ring or the previous ring is. The lamellae of the known calibration device are combined in segments to form a lamella block and are carried by a holding structure. The holding structure is in turn connected to the housing in a radially adjustable manner. The problem with this embodiment of the known calibration device, however, is the threading of the individual segments on rods, whereby ground sleeves have to be inserted between the segments. These sleeves ensure a constant distance between the segments. However, the design requires a lengthy and therefore costly assembly. In addition, unavoidable manufacturing tolerances add up, which can lead to the position of the segment carriers deviating unacceptably. In extreme cases, the segment blocks cannot be installed in the calibration basket, which in turn requires reworking.
Aufgabe der vorliegenden Erfindung ist es, eine Kalibriereinrichtung zur Verfügung zu stellen, die einfach aufgebaut und leicht montierbar ist und bei der übermäßige Fertigungstoleranzen vermieden werden können.The object of the present invention is to provide a calibration device which is simple in construction and easy to assemble and in which excessive manufacturing tolerances can be avoided.
Diese Aufgabe wird durch die im Anspruch 1 oder im Anspruch 2 angegebenen Merkmale gelöst.This object is achieved by the features specified in claim 1 or in claim 2.
Ein Grundgedanke der vorliegenden Erfindung ist es, die Segmentkörper jeweils aus einem Werkstück herzustellen. Die Segmentkörper können dann mit einer innenseitig fertigen Kontur für die Kalibrieröffnung ausgebildet werden. Alternativ ist es möglich, innenseitig separate Teile zur Ausbildung der Kontur für die Kalibrieröffnung anzuordnen.A basic idea of the present invention is to produce the segment bodies from one workpiece each. The segment bodies can then be formed with a contour for the calibration opening that is finished on the inside. Alternatively, it is possible to arrange separate parts on the inside for forming the contour for the calibration opening.
Es gibt vielfältige Möglichkeiten, den Segmentkörper einstückig herzustellen bzw. auszubilden. So kann der Segmentkörper aus einem Stück gefräst werden. Der Rohling kann beispielsweise aus Metall bestehen und in einer Form gegossen werden. Natürlich ist auch die Verwendung anderer Materialien, wie Kunststoff, für den Segmentkörper möglich. Die später innenliegende Kontur für die Kalibrieröffnung kann wiederum direkt in dem Werkstück selbst ausgebildet werden. So ist es möglich, die entsprechend bearbeitete Innenfläche geeignet zu beschichten, so dass eine möglichst reibungsfreie und verschleißfeste Oberfläche gegeben ist. Es ist auch möglich, eine Art Lamellenstruktur oder eine andere Struktur durch Einfräsen von Nuten in das Werkstück zu erzeugen. Alternativ ist es möglich, an das Werkstück separate Konturelemente anzubringen. Beispielsweise können in einem Kunststoffkörper Metallelemente, insbesondere halbmondförmige Lamellen, eingesetzt werden.There are various options for producing or forming the segment body in one piece. The segment body can thus be milled from one piece. The blank can be made of metal, for example, and cast in a mold. Of course, the use of other materials, such as plastic, is also possible for the segment body. The later internal contour for the calibration opening can in turn be formed directly in the workpiece itself. It is thus possible to coat the correspondingly machined inner surface in a suitable manner, so that the surface is as friction-free and wear-resistant as possible. It is also possible to create a type of lamella structure or another structure by milling grooves in the workpiece. Alternatively, it is possible to attach separate contour elements to the workpiece. For example, metal elements, in particular crescent-shaped slats, can be used in a plastic body.
Wesentlich bei der vorliegenden Erfindung ist der im wesentlichen einstückige Segmentkörper, der eine einfache, schnelle und montagefreundliche Herstellung ermöglicht.What is essential in the present invention is the essentially one-piece segment body, which enables simple, fast and assembly-friendly production.
Die Erfindung wird nachfolgend mit Bezug auf die beigelegten Zeichnungen näher erläutert. Die Zeichnungen zeigen in:The invention is explained in more detail below with reference to the accompanying drawings. The drawings show in:
Fig. 1 : eine schematische Schnittdarstellung einer Ausführungsform einer bekannten Kalibriereinrichtung senkrecht zur Produktionsrichtung eines Rohres,1: a schematic sectional view of an embodiment of a known calibration device perpendicular to the production direction of a tube,
Fig. 2: eine Kalibriereinrichtung wie in Fig. 1 in schematischer Schnittansicht parallel zur Produktionsrichtung,2: a calibration device as in FIG. 1 in a schematic sectional view parallel to the production direction,
Fig. 3: einen einzelnen Segmentblock der bekannten Kalibriereinrichtung gemäß den Figuren 1 und 2 in schematisch vereinfachter Darstellung,3: a single segment block of the known calibration device according to Figures 1 and 2 in a schematically simplified representation,
Fig. 4: eine Ausführungsform eines erfindungsgemäßen Segmentes in schematisch vereinfachter Darstellung und4: an embodiment of a segment according to the invention in a schematically simplified representation and
Fig. 5: eine weitere Ausführungsform eines erfindungsgemäßen Segmentes in schematisch vereinfachter Darstellung.5: a further embodiment of a segment according to the invention in a schematically simplified representation.
Eine vollständige Anordnung einer Vorrichtung zur Herstellung eines Kunststoffrohres kann aus der DE 198 43 340 C2 entnommen werden. In dieser ist eine bereits verstellbare Kalibriereinrichtung dargestellt. Die verstellbare Kalibriereinrichtung ist dabei eine Kernkomponente einer Rohrextrusionsanlage mit Dimensionswechselmöglichkeit. Sie übernimmt die formgebende Aufgabe einer Standardkalibrierung, kann jedoch über den konstruktionsbedingt vorgegebenen Durchmesserbereich stufenlos verstellt werden.A complete arrangement of a device for producing a plastic tube can be found in DE 198 43 340 C2. An already adjustable calibration device is shown in this. The adjustable calibration device is a core component of a pipe extrusion system with the possibility of changing dimensions. It takes on the shaping task of a standard calibration, but can be adjusted continuously over the design-related diameter range.
Ermöglicht wird diese Verstellung dadurch, dass die am Rohr anliegende Fläche durch eine große Vielzahl von einzelnen Segmenten gebildet wird. Die in Fig. 1 dargestellten Segmente 18 besitzen dabei entlang ihrer Innenseite, also der Umfangsrichtung des Rohres eine Rundung, die dem größtmöglichen Rohraußendurchmesser entspricht und sind zu einzelnen Segmentabschnitten zusammengefasst. Diese Segmentabschnitte umfassen einzelne Lamellen, die in Produktionsrichtung gesehen, beabstandet sind, jedoch dicht hintereinander liegen. Zwei aufeinander folgende Segmentkränze sind zu einem Dimensionskranz zusammengefasst, welche versetzt auf Lücken zueinander angeordnet sind. Dadurch wird gewährleistet, dass möglichst keinerlei Kanten beim Durchlauf des Rohres durch die Kalibriereinrichtung entstehen. Die einzelnen Segmentoberflächen bilden gemeinsam eine im wesentlichen glatte Rohrinnenfläche mit nahezu kreisrunder Geometrie.This adjustment is made possible by the fact that the surface adjacent to the tube is formed by a large number of individual segments. The shown in Fig. 1 Segments 18 have a curve along their inside, that is, the circumferential direction of the pipe, which corresponds to the largest possible pipe outer diameter and are combined to form individual segment sections. These segment sections comprise individual lamellae which, viewed in the direction of production, are spaced apart but lie closely behind one another. Two consecutive segment wreaths are combined to form a dimension wreath, which are staggered to each other. This ensures that there are as few edges as possible when the pipe passes through the calibration device. The individual segment surfaces together form an essentially smooth inner tube surface with an almost circular geometry.
Wie in Fig. 3 zu erkennen ist, sind bei der bekannten Kalibriereinrichtung die in Produktionsrichtung des Rohres axial hintereinander liegenden Segmente 18 zu einem Segmentblock zusammengefasst. Dazu wird eine Trägerstruktur 30 verwendet. Die Trägerstruktur besteht im wesentlichen aus zwei Stangen, auf denen die einzelnen Segmente 18 aufgereiht sind. Die Trägerstruktur 30 ist mit einer Halterung- und Betätigungsvorrichtung 20 verbunden, welche die jeweiligen Segmentblöcke in radial verstellbarer Weise mit dem Gehäuse der Kalibriereinrichtung verbindet. Das Gehäuse der Kalibriereinrichtung besteht beim bekannten Ausführungsbeispiel der Fig. 1 aus zwei koaxial ineinander angeordneten Zylinderabschnitten 12 und 14. In diesen Zylinderabschnitten sind die einzelnen Segmentblöcke 16 kreisförmig aufgenommen. Ein einzelner - bekannter - Segmentblock der bisher bekannten Ausführungsform ist schematisch in Fig. 3 dargestellt.As can be seen in FIG. 3, in the known calibration device the segments 18 lying axially one behind the other in the production direction of the tube are combined to form a segment block. A support structure 30 is used for this. The support structure consists essentially of two rods on which the individual segments 18 are lined up. The support structure 30 is connected to a holding and actuating device 20, which connects the respective segment blocks to the housing of the calibration device in a radially adjustable manner. In the known exemplary embodiment in FIG. 1, the housing of the calibration device consists of two cylinder sections 12 and 14 arranged coaxially one inside the other. The individual segment blocks 16 are accommodated in a circular manner in these cylinder sections. A single - known - segment block of the previously known embodiment is shown schematically in FIG. 3.
Er umfasst hintereinander angeordnete Lamellen 18, die an den zwei Tragstäben befestigt sind. Die Tragstäbe bilden die Trägerstruktur 30. An den Tragstäben wiederum sind in Axialrichtung beabstandet zwei als Spindelträger dienende Außengewindestäbe 40 angeordnet. Bei einer fertig montierten Kalibriereinrichtung sind die Außengewindestäbe 40 in zugehörigen Bohrungen der Gehäusezylinder 12 und 14 aufgenommen. Zwischen den beiden Gehäusezylindern 12 und 14 ist für jeden Außengewindestab eine Zahnradmutter 22 vorgesehen, die mit dem Außengewinde des Außengewindestabs 40 in verstellbare Weise zusammenwirkt. Senkrecht zur Produktionsrichtung des Rohres 24 (vgl. Fig. 1), sind vorliegend 12 Segmentblöcke kreisförmig angeordnet. Jeder Segmentblock besitzt jeweils zwei Spindelträger 20, die axial beabstandet sind (Fig. 2) und jeweils mit einer zugehörigen Zahnradmutter 22 zusammenwirken. Die Zahnradmuttern 22 wiederum werden durch einen Zahnradring 26 der sich umfangsmäßig zwischen den axial beabstandeten Zahnradmuttern 22 erstreckt, gemeinsam verstellt. Dazu besitzt der Zahnradring 26 an seinen beiden Rändern mit den Zahnradmuttern 22 kämmende Zähne.It comprises lamellae 18 arranged one behind the other, which are fastened to the two support rods. The support rods form the support structure 30. On the support rods, in turn, two external thread rods 40, which serve as spindle supports, are spaced apart in the axial direction. In the case of a fully assembled calibration device, the external threaded rods 40 are received in the associated bores of the housing cylinders 12 and 14. Between the two housing cylinders 12 and 14, a gear nut 22 is provided for each external threaded rod, which cooperates with the external thread of the external threaded rod 40 in an adjustable manner. At right angles to the direction of production of the tube 24 (see FIG. 1), 12 segment blocks are arranged in a circle in the present case. Each segment block has two spindle carriers 20, which are axially spaced apart (FIG. 2) and each interact with an associated gear nut 22. The gear nuts 22 are in turn adjusted together by a gear ring 26 which extends circumferentially between the axially spaced gear nuts 22. For this purpose, the gear ring 26 has teeth meshing with the gear nuts 22 on its two edges.
Durch Betätigung des Zahnradringes 26 können alle Segmentblöcke gleichzeitig und in gleicher Weise radial nach Außen oder Innen verstellt werden. Werden alle Segmentblöcke in gleicher Weise radial verstellt, so ergibt sich ein veränderlicher Kalibrierdurchmesser. Im Bereich der Verstellmöglichkeit lässt sich damit der Außendurchmesser des zu kalibrierenden Rohres 24 definieren.By actuating the gear ring 26, all segment blocks can be adjusted radially outwards or inwards simultaneously and in the same way. If all segment blocks are adjusted radially in the same way, the calibration diameter changes. The outer diameter of the tube 24 to be calibrated can thus be defined in the area of the adjustment possibility.
In den Fig. 4 und 5 sind erfindungsgemäße Ausführungen der Segmente 18 dargestellt. Die erfindungsgemäßen Segmente umfassen nicht - wie beim Stand der Technik - eine Vielzahl von einzelnen Lamellen, sondern sind aus einem Werkstück hergestellt, welches jeweils einen Segmentkörper 50 bildet.4 and 5 embodiments of the segments 18 according to the invention are shown. The segments according to the invention do not comprise - as in the prior art - a large number of individual lamellae, but are made from a workpiece which in each case forms a segment body 50.
In Fig. 4 ist innenseitig des Segmentkörpers eine Kontur ausgeformt (nicht im einzelnen ersichtlich), die zur Ausbildung der Kalibrieröffnung erforderlich ist. Es kann sich dabei um eine glatte, evtl. beschichtete Oberfläche handeln, die einen gewölbten Rohrsegmentabschnitt darstellt. An deren Seiten können Verzahnungen angeordnet sein, welche die Überlappung der einzelnen benachbart zueinander angeordneten Segmente gewährleisten.In Fig. 4, a contour is formed on the inside of the segment body (not shown in detail), which is required to form the calibration opening. It can be a smooth, possibly coated surface, which represents a curved pipe segment section. Toothings can be arranged on their sides, which ensure the overlap of the individual segments arranged adjacent to one another.
Gemäß einer Ausführungsform können in die Innenfläche des Segmentkörpers auch Strukturen eingearbeitet sein. So ist es möglich, parallel beabstandete Nuten einzubringen, so dass wiederum lamellenartige Vorsprünge innenseitig, allerdings einstückig mit dem Segmentkörper ausgebildet sind. Das Werkstück kann aus Metall gegossen und nachträglich bearbeitet sein. Insbesondere können Oberflächen durch Fräsen ausgebildet werden. Eine weitere Möglichkeit der Ausbildung des Segmentkörpers ist schematisch in Fig. 5 dargestellt. Hier besteht der Segmentkörper 50 selbst aus Kunststoff, in den an der späteren Innenseite halbmondförmige Metalllamellen eingefügt sind. Diese Ausbildung hat den Vorteil, dass sich der Kunststoff-Segmentkörper 50 relativ kostengünstig und einfach herstellen lässt; die Metalllamellen aber doch widerstandfähig und präzise zu fertigen sind.According to one embodiment, structures can also be incorporated into the inner surface of the segment body. It is thus possible to introduce parallel spaced grooves, so that lamella-like projections are again formed on the inside, but in one piece with the segment body. The workpiece can be cast from metal and subsequently machined. In particular, surfaces can be formed by milling. Another possibility of forming the segment body is shown schematically in FIG. 5. Here, the segment body 50 itself consists of plastic, in which crescent-shaped metal lamellae are inserted on the later inside. This design has the advantage that the plastic segment body 50 can be produced relatively inexpensively and simply; the metal fins are nevertheless resistant and precise to manufacture.
Natürlich sind auch andere Möglichkeiten gegeben, den Segmentkörper im wesentlichen einstückig herzustellen und dann die Innenfläche i) entweder am oder im Werkstück selbst auszubilden oder ii) an oder in das Werkstück einzufügen. Ausschlaggebend ist, dass einzelne Lamellen nicht montageaufwendig einzeln aufgereiht werden müssen. Überdies ist es erfindungsgemäß möglich, die einzuhaltende Fertigungstoleranz zu gewährleisten. Of course, there are also other possibilities for producing the segment body essentially in one piece and then forming the inner surface i) either on or in the workpiece itself or ii) inserting on or into the workpiece. The decisive factor is that individual slats do not have to be lined up individually, which is time-consuming to assemble. Furthermore, it is possible according to the invention to ensure the manufacturing tolerance to be observed.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
Kalibrierkorbcalibrating
Kalibrieröffnungcalibration port
Äußerer GehäusezylinderOuter housing cylinder
Innerer GehäusezylinderInner cylinder
Segmentblocksegment block
Lamellenslats
Spindelträgerspindle carrier
Zahnradmuttergear nut
Rohrpipe
Zahnringtoothed ring
Lamellenträgerplate carrier
AußengewindestabExternally threaded rod
Segmentkörpersegment body
Metalleinsätze metal inserts

Claims

Patentansprüche claims
1. Kalibriereinrichtung zur Kalibrierung von extrudierten Endlosprofilen, insbesondere Rohren, mit einer Kalibrieröffnung (11), die durch eine Vielzahl von umfangsmäßig angeordneten Segmenten (18) gebildet ist, deren Innenoberfläche gemeinsam die Kalibrieröffnung (11) bilden, wobei1. Calibration device for the calibration of extruded endless profiles, in particular pipes, with a calibration opening (11) which is formed by a plurality of circumferentially arranged segments (18), the inner surface of which together form the calibration opening (11), wherein
- die einzelnen Segmente (18) jeweils einen Segmentkörper (50) umfassen,- The individual segments (18) each comprise a segment body (50),
- die Segmentkörper (50) im wesentlich kreisförmig derart in einem Gehäuse (12, 14) aufgenommen sind, dass sich axial benachbarte Segmente (18) zur Ausbildung der Kalibrieröffnung (11) in Umfangsrichtung teilweise überlappen, und jeder Segmentkörper (50) mit zumindest einer Betätigungsvorrichtung (20) verbunden ist, mit der die einzelnen Segmentkörper (50) in dem Gehäuse (12, 14) gehalten sind und eine Verstellung eines jeden einzelnen Segmentkörpers (50) in Radialrichtung vornehmbar ist, dadurch gekennzeichnet, dass dass die Segmentkörper (50) jeweils aus einem Werkstück hergestellt sind und innenseitig des Segmentkörpers (50) eine Kontur ausgeformt ist, die zur Ausbildung der Kalibrieröffnung (11) erforderlich ist.- The segment bodies (50) are accommodated in a substantially circular manner in a housing (12, 14) in such a way that axially adjacent segments (18) for forming the calibration opening (11) partially overlap in the circumferential direction, and each segment body (50) with at least one Actuating device (20) is connected, with which the individual segment bodies (50) are held in the housing (12, 14) and an adjustment of each individual segment body (50) in the radial direction can be carried out, characterized in that the segment bodies (50) are each made from a workpiece and a contour is formed on the inside of the segment body (50), which is necessary for forming the calibration opening (11).
2. Kalibriereinrichtung zur Kalibrierung von extrudierten Endlosprofilen, insbesondere Rohren, mit einer Kalibrieröffnung (11), die durch eine Vielzahl von umfangsmäßig angeordneten Segmenten (18) gebildet ist, deren Innenoberfläche gemeinsam die Kalibrieröffnung (11) bilden, wobei2. Calibration device for the calibration of extruded endless profiles, in particular pipes, with a calibration opening (11) which is formed by a plurality of circumferentially arranged segments (18), the inner surface of which together form the calibration opening (11), wherein
- die einzelnen Segmente (18) jeweils einen Segmentkörper (50) umfassen,- The individual segments (18) each comprise a segment body (50),
- die Segmentkörper (50) im wesentlich kreisförmig derart in einem Gehäuse (12, 14) aufgenommen sind, dass sich axial benachbarte Segmente (18) zur Ausbildung der Kalibrieröffnung (11) in Umfangsrichtung teilweise überlappen, und jeder Segmentkörper (50) mit zumindest einer Betätigungsvorrichtung (20) verbunden ist, mit der die einzelnen Segmentkörper (50) in dem Gehäuse (12, 14) gehalten sind und eine Verstellung eines jeden einzelnen Segmentkörpers (50) in Radialrichtung vomehmbar ist, dadurch gekennzeichnet, dass dass die Segmentkörper (50) jeweils aus einem Werkstück hergestellt sind und Einsätze (52) zur Ausbildung der Kontur daran oder darin aufgenommen sind.- The segment bodies (50) are accommodated in a substantially circular manner in a housing (12, 14) in such a way that axially adjacent segments (18) for forming the calibration opening (11) partially overlap in the circumferential direction, and each segment body (50) with at least one Actuating device (20) is connected, with which the individual segment bodies (50) in the housing (12, 14) are held and an adjustment of each individual segment body (50) in the radial direction can be removed, characterized in that the segment bodies (50) are each made from a workpiece and inserts (52) for forming the contour on or in it are accommodated.
3. Kalibriereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Segmentkörper (50) aus einem Werkstück gefräst sind.3. Calibration device according to claim 1 or 2, characterized in that the segment body (50) are milled from a workpiece.
4. Kalibriereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Segmentkörper (50) aus Metall gegossen und nachbearbeitet sind.4. Calibration device according to claim 1 or 2, characterized in that the segment body (50) are cast from metal and reworked.
5. Kalibriereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, die Segmentkörper (50) aus Kunststoff hergestellt sind, und die die Kontur ausbildenden Flächen aus Metall bestehen, die in den Kunststoffblock eingesetzt sind.5. Calibration device according to claim 1 or 2, characterized in that the segment body (50) are made of plastic, and the contour-forming surfaces consist of metal, which are inserted into the plastic block.
6. Kalibriereinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Metalleinsätze als Lamellensegmente ausgebildet sind. 6. Calibration device according to claim 5, characterized in that the metal inserts are designed as lamella segments.
PCT/EP2004/005024 2003-05-24 2004-05-11 Calibrating device WO2004103684A1 (en)

Priority Applications (3)

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EP04732114.6A EP1631436B1 (en) 2003-05-24 2004-05-11 Calibrating device
CA2526703A CA2526703C (en) 2003-05-24 2004-05-11 Calibration device for calibrating extruded continuous profiles
US11/284,303 US7357630B2 (en) 2003-05-24 2005-11-21 Calibration device

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DE10323543.4 2003-05-24
DE10323543A DE10323543B4 (en) 2003-05-24 2003-05-24 calibration

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EP (1) EP1631436B1 (en)
CN (1) CN100528535C (en)
CA (1) CA2526703C (en)
DE (1) DE10323543B4 (en)
PL (1) PL1631436T3 (en)
RU (1) RU2314922C2 (en)
WO (1) WO2004103684A1 (en)

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DE102019002027A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamellar block with lamellar openings
DE102019002011A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Slat block with offset slats
WO2020187435A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device
WO2020187438A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device with internal crosspiece
DE102019002007A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamellar block for a calibration device with internal bar
WO2020187496A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block comprising laterally displaced lamellae
WO2020187494A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with continuously varied lamella distribution

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WO2020187439A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device with internal crosspiece
WO2020187494A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with continuously varied lamella distribution
DE102019002011A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Slat block with offset slats
WO2020187435A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device
WO2020187438A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device with internal crosspiece
DE102019002007A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamellar block for a calibration device with internal bar
DE102019002005A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamellar block for a calibration device with internal bar
WO2020187496A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block comprising laterally displaced lamellae
WO2020187488A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with a continuously varying lamella width
WO2020187497A1 (en) 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with offset lamellae
DE102019002018A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block for a calibration device
DE102019002027A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamellar block with lamellar openings
DE102019002008A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with continuously varied lamella width
DE102019002022A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with laterally offset lamellae
DE102019002025A1 (en) * 2019-03-21 2020-09-24 Kraussmaffei Technologies Gmbh Lamella block with continuously varied lamella pitch
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US11639017B2 (en) 2019-03-21 2023-05-02 Kraussmaffei Technologies Gmbh Lamella block with continuously varied lamella division
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RU2005140565A (en) 2006-05-10
US7357630B2 (en) 2008-04-15
RU2314922C2 (en) 2008-01-20
DE10323543A1 (en) 2004-12-30
DE10323543B4 (en) 2005-02-10
EP1631436B1 (en) 2017-02-22
US20060071372A1 (en) 2006-04-06
CA2526703C (en) 2011-08-02
CN1780725A (en) 2006-05-31
PL1631436T3 (en) 2017-08-31
EP1631436A1 (en) 2006-03-08
CA2526703A1 (en) 2004-12-02
CN100528535C (en) 2009-08-19

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